Thread (26 messages) 26 messages, 5 authors, 2022-03-09

Re: [PATCH 3/6] dt-bindings: display: sitronix,st7735r: Remove spi-max-frequency limit

From: Noralf Trønnes <hidden>
Date: 2021-12-06 16:13:32
Also in: dri-devel, linux-fbdev, linux-staging


Den 06.12.2021 16.19, skrev David Lechner:
On 11/24/21 9:07 AM, Noralf Trønnes wrote:
quoted
The datasheet lists the minimum Serial clock cycle (Write) as 66ns
which is
Is this supposed to say "maximum" rather than "minimum"?
Minimum cycle time == maximum frequency.

Noralf.
quoted
15MHz. Mostly it can do much better than that and is in fact often run at
32MHz. With a clever driver that runs configuration commands at a low
speed
and only the pixel data at the maximum speed the configuration can't be
messed up by transfer errors and the speed is only limited by the
amount of
pixel glitches that one is able to tolerate.

Signed-off-by: Noralf Trønnes <redacted>
---
Acked-by: David Lechner <david@lechnology.com>
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